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Dimethylamine

Abbreviation d-MA
Plant Niigata
Main Applications Fiber treatment agent, surfactant, macromolecute flocculating agent
Existing Chemical Substance No. (2)-134

Properties

  100%d-MA 50%d-MA
Chemical Formula (CH3)2NH
Molecular Weight 45.08
Appearance Colorless gas (under room temperature & atomospheric pressure) Colorless transparent liquid (liquified under pressure) Colorless transparent liquid
Odor Fishy smell
Specific Gravity (liquid 20℃/4℃) 0.66 0.862
Boiling Point (℃ 760mmHg) 6.90 45.0
Freezing Point (℃ 760mmHg) -92.2 -46
Flash Point (℃ Tagliabue (Tag) Closed Cup) 6.7 -22.3
Ignition Temperature (℃) 402 402 (Dimethylamine)
Flammability Limits (vol%) 2.8-14.4 2.8-14.4 (Dimethylamine)
Vapour Pressure (mmHg 25℃) 1292 323
Viscosity (CP 25℃) 0.186 No data.
Solubility 60.0wt% in water (40℃ 1atm) Readily soluble in water
Stability&
Reactivity
May produce explosive substance upon contact with mercury. Decompose into toxic gas when burnt. Reacts readily with acid; corrosive to copper, zinc and their alloys, and aluminum. Reacts strong oxidizers, chlorine and nitrite; affect plastics, rubber and coating materials.

Applicable Laws

  100%d-MA 50%d-MA
Industrial Safety and Health Law Flammable Gas, Chemical Equipment Combustible Substance, Chemical Equipment
High Pressure Gas High Pressure Gas (Operational), Liquefied Gas, Flammable Gas, Toxic Gas
Fire Service Law Class 4 Petroleum No.1 soluble in water
Poisonous and Deleterious Substances Control Law Deleterious Substance
Law on the Prevention of Marine Pollution and Maritime Disaster Hazardous fluid class C
Ship Safety Law High Pressure Gas Inflammable liquids
Civil Aeronautics Law High Pressure Gas Inflammable liquid
Other Major Applicable Laws Export Trade Control Ordinance
(Export License Required)

Classification of Hazard

  100%d-MA 50%d-MA
Classification High Pressure Gas, Flammable Gas, Acute Toxicity Materials Inflammable liquid
Hazardous High Pressure Liquefied Gas and Inflammable Inflammable liquid
Harmful Severely irritates the skin and the mucosa upon contact; may cause chemical burns; repeated exposure may cause CNS disorder, headaches, anaemia, elevation of blood pressure, agitation, etc. Inhalation in high concentrations (vapour when the density is 50%) may cause edema of the lungs.

Product Standard

  100%d-MA 50%d-MA
Monomethylamine (%) 0.1 or less
Dimethylamine (%) 99.9 or greater 50.0-52.0
Trimethylamine (%) 0.2 or less 0.1 or less
Ammonia (%) 0.0 or less
Water Content (%) 0.5 or less

Contact

Natural Gas Chemicals Company
Organic Chemicals Division

TEL:+81-3-3283-4788
FAX:+81-3-3214-0930

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